<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .normal {
            font-style: normal;
        }

        .italic {
            font-style: italic;
            /* font-style: oblique; */
        }
    </style>
</head>
<body>
    <p class="normal">正常字体样式</p>
    <p class="italic">斜体字</p>
    <p>这是一个用i标签实现的 <i> 斜体 </i></p>
</body>
</html>